Differential motion for spooling-machines.



P. GROSSER.

DIFFERENTIAL MOTION FOR SPOOLING MACHINES.

APPLICATION FILED 33.11, 1913.

1,080,965. Patented Dec. 9, 1913.

PAUL GROSSER, OF MABKERSDORF, GERMANY.

DIFFERENTIAL TJIOTION FOR SPOOLING-IIIACI-IINES.

Specification of Letters Patent.

Patented Dec. 9,1913.

Application filed February 11, 1913. Serial No. 747,692.

To all whom it may concern:

Be it known that 1, PAUL GRossnB, a citizen of the Empire of Germany, residing at Markersdorf, a village in the district of Leipsic, Kingdom of Saxony, Empire of Germany, have invented a new and useful Differential Motion for Spoofing-Machines, of which the following is a specification.

lhe known diflerential motions for the spindles of spooling machines intended to wind the yarn or thread on spools or bobbins with conical heads and comprising non-circular or heart-shaped gear wheels present the defect, that the various teeth of the noncircular or heart-shaped gear wheel are different from one another in correspondence to the varying radius of the pitch-line, as regards shape and strength, so that they can not be cut by machine-tools with the required exactness. In consequence of this an irregular,intermitting or jerky rotation of the spindles and therewith also of the spools or bobbins will result, whereby not only the number of revolutions is necessarily reduced, but also the regularity of the winding of the spool or bobbin is impaired.

My invention relates to improvements in such differential motions, whereby the said defects are avoided, and the chief improvement consists in the employment of four circular gear wheels, one on a driving shaft and one on a spindle, while the two last gear wheels are eccentrically rigidly connected with one other and are respectively pivotally connected at their centers with two rocking levers loose on the driving shaft and on the spindle. The two gear wheels on the driving shaft and on the spindle may be connected with the two other gear wheels either directly or by means of intermediate gear wheels. Thereby the advantage is obtained, that the teeth of all the gear wheels are alike for any gear wheel and can be eX actly cut by means of suitable machine-tools, so that it is possible to drive the spools or bobbins at a high speed, while all jerks are reduced to a minimum and a perfect regularity in the winding on the spools or bobbins is guaranteed.

1 will now proceed to describe my invention with reference to the accompanying drawing, in which Figure 1 is an elevation of a differential motion, a frame part being shown in vertical cross section and only so much being shown as is sufiicient for the understanding of the invention, and Fig. 2 is a plan view of the same, the said frame part being indicated by dotted lines.

Similar characters of reference refer to similar parts in both views.

1 denotes a spool or bobbin having a conical head 1' secured in any known manner on a spindle 2, which is mounted to turn in any known manner (not shown) in the frame part 26 and carries fast on it a gear wheel 3 and loose a lever 23, that is adapted to rock on the spindle 2 and is prevented from endw1se motion by a loose collar 27 with a setscrew.

Parallel to the spindle 2 a vertical drivlng shaft 9 is mounted to turn in any known manner (not shown) in the frame parts 26, 31 and carries fast on it a gear wheel 8 and loose a rocking lever 18, which I latter is prevented from endwise motion by a loose collar 28 with a set-screw. The driving shaft 9 is arranged to be driven 1n any known manner. F or example it carries a fast pulley 11 and a loose pulley 10 to either of which an endless belt 29 can be shifted by means of a known beltfork 30. The free end of the rocking lever 18 may be supported by means of a segmental guide 19 fastened on the frame part 26. The lever 18 carries two pins 6 and 32, on one 32 of which an intermediate gear wheel 7 is mounted to turn, which meshes with the already mentioned gear wheel 8. On the other pin 6 a gear wheel 5 is mounted to turn, and this gear 5 meshes with the intermediate gear wheel 7. Another gear wheel 4 eccentric to the pin 6 is in any known manner (not shown) rigidly con nected with the gear wheel 5 and is adapted to mesh with the gear wheel 3. In order to keep the gear wheel 1 in permanent engagement with the gear wheel 3 in spite of the varying distance between the spindle 2 and the pin 6, the gear wheel 4: is provided at its axis with a pin 24, which engages in aslot 25 at the free end of the rocking lever 23 and moreover the gear wheel 4: is provided on one side (in the present case on the lower side) with a concentric flange 20, which passes between two guiding pins 21 and 22 provided on the lever 23. Of course the two pins 21, 22 and the slot 25 are in the central plane of the lever 23 passing through the. aXis of the spindle 2 and through the pin 24, so as to avoid any jamming or pinching.

It is to be noted, that as the distance between the spindle 2 and the center of the gear wheel 4 must be constant, the slot 25 need not be long, in fact it may be changed into a circular hole in which the pin 24fits and can turn. Of course, where so preferred, the pin 24 may be fastened on the lever 23 and be arranged to engage and turn in a hole in the center of the gear wheel 4.

rock in following the relative rotation of the pin 24 around the pin 6.

0n the driving shaft 9 a chain wheel 33 may be mounted so that it may move longitudinally of but is prevented from turning on the shaft. Parallel to the driving shaft 9 a vertical shaft 34 is in any known man ner (not shown) mounted to turn in the machine frame and on this shaft 34 a second chain w-h'eel 3-5 may be mounted so as to move longitudinally thereof and this wheel '35 is connected with the first chain wheel 33 by means of an endless chain 36. 7 Any known means (not shown), of which the bent part 37 shown in Fig. 1 forms a part, may be provided for periodically raising gradually and simultaneously the two chain wheels 33, 35 in proportion as the winding 38 (indicated by dotted lines in Fig. 1) in conical layers on the spool or bobbin 1 commencing at e and ending at f proceeds. The chain wheel 35 is rigidly connected with a bevel pinion '39 which is also shiftable on the shaft '34 and meshes with a bevel wheel 40, that is rigidly connected with a grooved eccentric cam disk 15 and is mounted to turn on-a suitable pin 41 on the bent part 37. A pin 42 is provided on the bent part 37 and a lever 16 with a yarn or thread guide 17 is mounted to rock on this pin 42. The lever 16 carries a roller 43, which engages in the groove of the cam disk 15 and it will be understood, that during the rotation of the cam disk 15 the lever 16 will be rocked, the guide 17 guiding the yarn or thread 44 in a circle from a to 0 in Fig. 1 downward and again upward.

The differential motion operates as follows: The various gear wheels are so proportioned and set, that the guide 17 occupies its highest position a, when the lever 18 occupies its most distant position from the spindle '2, in order words, when the tooth b of the gear wheel 4 having the maximum peripheral velocity engages in the gear wheel 3, and that the guide 17 occupies its lowest position 0, when the lever 18 is nearest to the spindle 2, in other words,

when the tooth d of the gear wheel 4 having the minimum peripheral velocity engages in the gear wheel 3. On starting the spoolmg machine by shifting the belt 29 from the loose pulley 10 to the fast pulley 11 the spool or bobbin 1 will be empty, so that the lowest position 0 of the guide 17 will be on a level with the point e in Fig. 1. The yarn or thread 44 will be wound on the spool or bobbin 1 in conical layers as usual, the guide 17 moving up and *down and the movable parts 33, 36, 35, 37, 42 being gradually raised in proportion as the winding proceeds. At the predetermined moment the differential motion is stopped by shifting the belt 29 from the fast pulley 1-1 to the loose pulley 10-, so that the filled spool or bobbin 1 can be takenofi' and exchanged for varied in 'many respects without departing from the spirit of my invention. Where so preferred, the flange 20 and the two guiding pins 21, '22 may be omitted altogether. If so desired, the intermediate gear wheel 7 may be omitted, so that the rotation is transmitted from the gear wheel 8 directly to the gear wheel 5. The yarn or thread guide '17 may be operated in any other known manner, so that the grooved cam disk 15 with i the chain gear 33-, 35, 36 and the shaft 34 are dispensed with.

I claim 1. In a differential motion for spooling H machines, a driving shaft, a circulargear fast on the driving shaft, alever loosely mounted to rock on the driving shaft, a spindle adapted to receive a spool, a second circular gear fast on the spindle, a second lever loosely mounted to rock on the spin- 7 dle, a third circular gear adapted to mesh with said first gear, means for pivotally connecting the center of said third gear with the first said lever, a fourth circular gear rigidly connected with the third gear eccentrically thereto and adapted to mesh with the second gear, and means for pivotally connecting the center of said fourth gear with the second lever.

2. In a differential motion for spooling machines, a driving shaft, a circular gear fast on the driving shaft, a lover I loosely mounted to rock on the driving shaft, a spindle adapted to receive a spool, a second circular gear fast on the spindle, a second lever loosely mounted to rock on the spindle, a third circular gear, means for pivotally connecting the center of said third gear with the first said lever, means for transmitting rotation from said first said gear to the third gear, a fourth circular gear rigidly connected With the third gear eccentrically thereto, means for pivotally connecting the center of said fourth gear with the second lever, and means for transmitting rotation from the fourth wheel to the second Wheel.

8. In a differential motion for spooling machines, a driving shaft, a circular gear fast on the driving shaft, a lever loosely mounted to rock on the driving shaft, a spindle, a second circular gear fast on the spindle, a second lever loosely mounted to rock on the spindle, a third circular gear adapted to mesh With the first gear, means for pivotally connecting the center of the third gear With the first lever, a fourth circular gear rigidly connected with the third gear eccentrically thereto and adapted to mesh With the second gear, means for pivotally connecting the center of the fourth gear with the second lever, a spool with conical head on said spindle, and Winding means for Winding the yarn or thread in conical layers on said spool, the several gears and Winding means being proportioned and arranged substantially as and for the purpose described.

4. In a differential motion for sp'ooling machines, a driving shaft, a circular gear fast on the driving shaft, a lever loosely mounted to rock on the driving shaft, a spindle, a second circular gear fast on the spindle, a second lever loosely mounted to rock on the spindle, a third circular gear, means for pivotally connecting the center of the third gear With the first said lever, means for transmitting rotation from the first gear to the third gear, a fourth circular gear rigidly connected With the third gear eccentrically thereto,means for pivotally connecting the center of said fourth gear with said second lever, means for transmitting rotation from the fourth Wheel to the second Wheel, a spool With conical head on the spindle, and Winding means for Winding the yarn or thread in conical layers on the spool, the several gears and Winding means being proportioned and arranged substantially as and for the purpose described.

In Witness whereof I have hereunto set my hand in presence 'of tWo Witnesses.

PAUL GROSSER.

Witnesses:

- EMIL STEGER,

E. KILBOURNE Foo'rn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

